Patent Assignment
Reel/Frame 012683/0881
Invalid Assignment, See Recording at Reel 012698, Frame 0326. (Re-Recorded to Correct Recordation Date from 5-14-2002 to 5-08-2002)
Recorded: 2002-05-14
Pages: 3
Assignor
CATALYST TECHNOLOGY, INC.
Executed: 2002-05-02
Assignee
CAT TECH, INC.
5805 E. NORTH BELT DRIVE, HUMBLE, TEXAS, 77396
Covered Properties
(5)
Catalyst Recovery Trough for Unloading Multi-Tube Reactors with Maximum Dust Containment
Patent:
4,820,496 →
Application:
06/514,287 →
Catalyst Recovery Through and Process for Unloading Multi-Tube Reactors with Maximum Dust Containment
Patent:
4,994,241 →
Application:
07/430,128 →
Catalyst Recovery Trough for Unloading Multi-Tube Reactors with Maximum Dust Containment
Patent:
5,114,685 →
Application:
07/565,232 →
Air Lance Reel for Catalyst Unloading of Tubular Reactors
Patent:
5,228,484 →
Application:
07/718,132 →
Nitrogen Insertion Protection System
Patent:
5,792,429 →
Application:
08/775,063 →
Related Assignments
(9)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Jul 15, 1983
From: SAPOFF, PAUL C.
To: CATALYST TECHNOLOGY INC., A KY CORP.
Reel/Frame 004166/0417 →
Assignment of Assignors Interest.
Dec 26, 1989
From: UNION CARBIDE INDUSTRIAL GASES INC., A CORP. OF DE
To: UNION CARBIDE INDUSTRIAL GASES TECHNOLOGY CORPORATION
Reel/Frame 005206/0425 →
Assignment of Assignors Interest.
Mar 31, 1991
From: UNION CARBIDE INDUSTRIAL GASES TECHNOLOGY CORP.; UNION CARBIDE CORPORATION; UNION CARBIDE INDUSTRIAL GASES TECHNOLOGY CORPORATION
To: CATALYST TECHNOLOGY, INC.,
Reel/Frame 005683/0791 →
Change of Name Effective on 06/12/1992
Dec 3, 1992
From: UNION CARBIDE INDUSTRIAL GASES TECHNOLOGY CORPORATION
To: PRAXAIR TECHNOLOGY, INC.
Reel/Frame 006337/0037 →
Assignment of Assignor's Interest
May 10, 1993
From: JOHNSON, KELLY J.
To: CATALYST TECHNOLOGY, INC.
Reel/Frame 006522/0766 →
Assignment of Assignor's Interest
Feb 23, 1998
From: EASTERLY, THOMAS PEYTON; JONES, WILLIAM OGLE
To: CATALYST TECHNOLOGY, INC.
Reel/Frame 008997/0368 →
Assignment of Assignor's Interest
May 8, 2002
From: CATALYST TECHNOLOGY, INC.
To: CAT TECH INC.
Reel/Frame 012698/0326 →
Conversion from Texas Corporation to Texas Llc
Dec 29, 2009
From: CAT TECH INC.
To: CAT TECH LLC
Reel/Frame 023708/0374 →
Conversion from Texas Llc to Delaware Llc and Change of Name
Dec 29, 2009
From: CAT TECH LLC
To: CLEAN HARBORS CATALYST TECHNOLOGIES, LLC
Reel/Frame 023708/0383 →